Storage vmotion to NFS datastores fails with error "Insufficient disk space on <NFS_VOLUME_NAME>"

Products

• VMware vCenter Server

Issue/Introduction

Unable to migrate the virtual machine disks to NFS datastores.
Below errors in vCenter vpxd logs :

msg = "Insufficient disk space on datastore 'NFS_Datatsore_name'."

Environment

vSphere 7.x, 8.x

Cause

Max file size limitation on the NFS array was set to 4 TB and Large File Support was not enabled.

To verify large file support configuration On Dell PowerScale OneFS run below cmd :

# isi_large_file -l
System version: v9.7.0.0
Large file support ready: Yes
Large file support enabled: Yes
Current maximum file size: 16TB
Achievable maximum file size: 16TB

Conversely, the following example shows that does not have large file support enabled:

# isi_large_file -l
System version: v9.7.0.0
Large file support ready: Yes
Large file support enabled: No
Current maximum file size: 4.0TB
Achievable maximum file size: 16TB

Reference: https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h18371-wp-powerscale-onefs-large-file-support.pdf

Note: This is an external article and needs to be validated from the NFS array vendor.

Resolution

Engage NFS array vendor to increase the Max file size